Lock.



Patented Npv. 26, |90I.

H. Bouman.

Lock..V v

(Application filed Sept. 17, 1900.)

(No Model.)

we Ncnms mens co. moroumo., Mswmsfqn, oV c.

' UNITED STATES PATENT OFFICE.

HENDRIOK RODRIGO, OF HOUSTON, TEXAS.

LOCK.

SPECIFICATION forming" part of Letters latent No. 687,340, datedNovember` 26, 1901.

Application filed September 17, 1900. Serial No. 30,8 73. (No model.)

To all whom, it may concern:

Beit known that I, HENDRICK RODRIGO, a subject of the Queen of theNetherlands, residing at Houston, in the county of Harris and State ofTexas, have invented a new and useful Lock, of which the following is aspecication. Y 1

The present invention relates to locks, and although it may be readilyapplied to various kinds, as will be evident to those skilled in the artupon reading the following specification, it is especially applicable topadlocks.

The prime object of the invention is to provide a supplemental lockingdevice for the holding element, which is entirely separate from theusual locking mechanism, so that should one unacquainted with the lockattempt to open it in the ordinary manner by operating said usualmechanism the holding element will still be securely locked and theattempt would thus be frustrated.

A further object is to disguise the operating device of the supplementallocking mechanism by constructing it so that it also performs thefunction of a keyhole-cover and may be operated in the performance ofsaid latter function without operating or affecting the supplementallocking mechanism.

In the following specification is described the preferred embodiments ofthe invention,

and this embodiment is also illustrated in the accompanying drawings,which form a part of the application, and in which- Figure 1 is avertical sectional view through a lock, to which the invention isapplied. Fig. 2 is a bottom plan view, a small portion being shown incross-section taken on the line of Fig. l. Fig. 3 is a side elevation ofthe interior of the face-plate, indicating how the keyhole-cover may bemoved to perform its several functions. Fig. 4. is a side elevation ofthe exterior of the face-plate and indicating the several positions ofthe keyhole cover. Fig. 5 is a vertical sectional view taken on the lineY Y of Fig. 3.

Similar numerals of reference designate corresponding parts in all thefigures of the drawings.

In the construction shown the improvements are applied to an ordinaryand wellknown form of padlock, the casing of which is indicated by thereference-numeral 10 and the holding element or shackle by the numeralll. This hasp is pivoted at one end to the frame and its free end isarranged to pass through a suitable opening in the casing and isprovided With the usual opening 12. The usual locking mechanism is showncomprising a pivoted latch 13, having a linger 14. arranged to engage inthe opening 12 of the hasp, and a pivoted tumbler l5 to hold the latchin operative position. The mechanism is operated by a key, and thecasing is therefore provided with a keyhole 16 to receive the same. Sofar as thus described the construction is well known.

The invention relates to supplemental locking means for the holdingmember or shackle l1, and this means in the present instance is asfollows: A dog 17 is slidably mounted in the upper end of the casing bybeing passed through a keeper 18, secured thereto. One end of the dog isarranged to be slid into the opening 12 of the shackle 11 when the endof the hasp is in the casing.

The opposite end of the dog carries a pivotpin 19, that passes through aslot in the casing and projects beyond the exterior face thereof. On theexposed or projecting end of the pin 19 is pivoted a plate 21, thatrests iiat against the exterior face of the casing l0 and extends to thelower edge thereof, forming a cover for the keyhole 16. Y It will thusbe seen that the cover-plate 21 has a free pivotal movement, and thatthe dog 17, to which it is pivoted, is slidably mounted, so that it maybe moved from an operative to an inoperative position with relation tothe hasp. In order to urge it to and hold it in its operative position,a spring 22 is secured at one end to the casing and has its free endbearing against the rear end of said dog.

In operation the hasp is locked in the usual manner by the lockingmechanism, and the supplemental locking-dog will also be moved to itsoperative relation. Assuming that one having no knowledge of themechanism should attempt to open the lock by means of a key, the coverwould be moved from over the keyhole, but as it rotates upon the pivot19 it does not aect the relation of the locking-dog, and although theusual locking mech anism is thrown the supplemental lock still holds. Toone acquainted with the combina- IOO tion,however, the unlockingoperation is easy to perform, for the reason that after the ordinarymechanism has been thrown to an inoperative position the dog is alsoslid back- Wardly.

The advantages of this construction will be evident. In the first placeit prevents the unauthorized and surreptitious opening of the lock, anu,secondly, because ot the operating means for the supplemental lockforming the keyhole cover this means is disguised, and it is not likelythat it would` be examined by aperson attempting to nd a supplementarylock.

In the specification and drawings there has been described and shown apadlock; but it will be evident that the device is capable of use uponmany other classes, and it is therefore to be understood that the termholding element employed in the claims is intended to cover not only apivoted shackle, but is broad enough to includela sliding bolt or anyother well-known device of this character.

From the foregoing it ,is thought that the construction, operation, andmany advantages of the herein-described invention will be apparent tothose skilled in the art Without further description, and it will beunder'- stood that various changes in the size, shape, proportion, andminordetails of construction may be resorted to without departing fromthe spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a lock, the combination with a casing,

of a movable holding element, mechanism for locking the same inoperative position, a supplemental locking device slidably mounted 4o 2.In a lock, the combination with a casing having a keyhole, of a movableholding element, means for locking the element in operative position, asupplemental locking device Slidably mounted in the casing and arrangedto engage the holding element and a combined keyhole cover and operatingmember located upon the exterior of the casing, said member beingpivoted to and slidable With the supplemental locking device.

3. In a lock, the combination with a casing having a keyhole and a slot,of a holding element pivoted to the casing, means for locking the'memberin operative position, a supplemental locking-dog slidably mountedWithin the casing and provided with a pivot that projects through theslot of the same and is slidable therein, said dog being arranged toengage the holding element, and a plate pivotally mounted upon theprojecting portion of the pivot, and forming an operating member for thedog, said plate being also arranged to cover the keyhole.

In testimony that I claim the foregoing as my own I have hereto afxed mysi gnature in the presence of two witnesses.l

HENDRICK RODRIGO.

Witnesses:

M. E. EBDoN, WILSON M. BROWN.

